JP5618563B2 - Oil-based ink composition for writing instruments - Google Patents

Oil-based ink composition for writing instruments Download PDF

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JP5618563B2
JP5618563B2 JP2010029360A JP2010029360A JP5618563B2 JP 5618563 B2 JP5618563 B2 JP 5618563B2 JP 2010029360 A JP2010029360 A JP 2010029360A JP 2010029360 A JP2010029360 A JP 2010029360A JP 5618563 B2 JP5618563 B2 JP 5618563B2
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ink composition
ink
writing
resin
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JP2011162725A (en
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中村 浩之
浩之 中村
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Pilot Ink Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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    • C09D11/16Writing inks

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Description

本発明は筆記具用油性インキ組成物に関する。更に詳細には、濡れ性に乏しい筆記面に対してはじきの無い良好な筆跡を形成できる筆記具用油性インキ組成物に関する。   The present invention relates to an oil-based ink composition for writing instruments. More specifically, the present invention relates to an oil-based ink composition for writing instruments that can form good handwriting without repelling on a writing surface with poor wettability.

従来、濡れ性の悪い材質、例えば、合成樹脂フィルムや、表面を樹脂コーティングした紙等に筆記しても筆跡を形成することができる油性インキとして、着色剤と、有機溶剤と、樹脂と、ポリエーテル変性シリコーンを含むマーキングペン用油性インキが開示されている(例えば、特許文献1参照)。しかし、前記油性インキでは、紙基材の上にポリエチレンフィルムをコートし更にシリコーン被膜で覆われたクラフトテープのような材料に筆記すると、はじきがみられ、良好な筆跡を形成できない。また、水で濡れた面に筆記するとマーキングペンチップが水分を吸収して筆記できなくなる。
そこで、種々材質の筆記面に筆跡を形成できるインキとして、二種以上の染料を混合した黒色染料、イソパラフィン系有機溶剤、特定のアルキルフェノール樹脂を配合してなるマーキングペン用油性インキが開示されている(例えば、特許文献2参照)。
前記インキは、クラフトテープや水に濡れた面にも筆跡を形成できるものの、クラフトテープに形成される筆跡は部分的にはじきを生じたり、水に濡れた面に形成された筆跡は、筆記箇所に存在する水滴に着色剤が移行し、水滴が乾燥後に筆記面を汚染する不具合を生じることがあった。
Conventionally, as an oil-based ink that can form handwriting even when writing on a material with poor wettability, for example, a synthetic resin film or paper coated with a resin, the coloring agent, organic solvent, resin, and poly An oil-based ink for marking pens containing ether-modified silicone has been disclosed (for example, see Patent Document 1). However, when the oil-based ink is written on a material such as a kraft tape coated with a polyethylene film on a paper base material and further covered with a silicone film, repelling is observed and good handwriting cannot be formed. In addition, when writing on the surface wet with water, the marking pen tip absorbs moisture and cannot be written.
Therefore, as an ink that can form handwriting on the writing surface of various materials, an oil-based ink for marking pens, which is a mixture of a black dye in which two or more dyes are mixed, an isoparaffinic organic solvent, and a specific alkylphenol resin is disclosed. (For example, refer to Patent Document 2).
Although the ink can form handwriting on the surface wetted with kraft tape or water, the handwriting formed on the kraft tape partially repels or the handwriting formed on the surface wet with water In some cases, the colorant migrates to the water droplets present in the water droplets, and the water droplets contaminate the writing surface after drying.

特開平11−21492号公報Japanese Patent Laid-Open No. 11-21492 特開2006−56946号公報JP 2006-56946 A

本発明は、従来のインキ組成物における不具合を解消するものであって、種々材質の筆記面や水で濡れた面に筆記した場合にも良好な筆跡を形成できると共に、該筆跡は、明瞭に視認され、筆記箇所に存在する水滴によって筆記面が着色剤で汚染されることのない筆記具用油性インキ組成物を提供することにある。   The present invention solves the problems in conventional ink compositions, and can form good handwriting even when writing on a writing surface of various materials or a surface wet with water, and the handwriting is clearly An object of the present invention is to provide an oil-based ink composition for a writing instrument which is visually recognized and whose writing surface is not contaminated by a colorant due to water droplets present at a writing location.

本発明は、着色剤と、樹脂と、イソパラフィン系炭化水素溶剤と、メルカプト変性シリコーン及びハイドロジェン変性シリコーンから選ばれる一種又は二種以上のシリコーン化合物を含有してなる筆記具用油性インキ組成物を要件とする。
更に、前記シリコーン化合物をインキ組成物全量中0.1〜5質量%含有してなることを要件とする。
The present invention comprises a colorant, a resin and a isoparaffinic hydrocarbon solvents, main mercapto-modified silicone and a writing instrument for oil-based ink composition comprising the one or two or more silicone compounds selected from the hydrogen-modified silicone Is a requirement.
Furthermore, it is a requirement that the silicone compound is contained in an amount of 0.1 to 5% by mass in the total amount of the ink composition.

本発明により、種々の材質の筆記面及び水に濡れた筆記面に形成された筆跡にはじきがみられず、良好な筆記が形成できると共に、筆記箇所に存在する水滴によって筆記面が着色剤で汚染されることのない実用性に富む筆記具用油性インキ組成物を提供することができる。   According to the present invention, the writing surface formed on the writing surface of various materials and the writing surface wet with water is not repelled, a good writing can be formed, and the writing surface is a colorant due to water drops present at the writing location. It is possible to provide an oil-based ink composition for a writing instrument that is not contaminated and is highly practical.

水濡れ面筆記試験の各評価における筆跡の状態を表す写真である。It is a photograph showing the state of handwriting in each evaluation of a wet surface writing test.

本発明の油性インキ組成物は、イソパラフィン系炭化水素溶剤を主溶剤として、特定構造を有するシリコーン化合物を添加することにより、筆跡はじきを生じやすい筆記面やインキにじみを生じやすい水濡れ面に対しても良好な筆跡を形成できるものである。
前記イソパラフィンは安全性が高く、しかも臭気が少ないので、好ましく用いられる。
前記イソパラフィンは炭素数が5〜12の範囲のものが、更には6〜10の範囲にあることが好ましく、例えば、イソヘキサン、イソヘプタン、イソオクタン、イソノナン、イソデカン等が用いられる。
商業的に入手可能なイソパラフィン系炭化水素としては、例えば、IPソルベント1016、IPソルベント1620、IPソルベント2028及びIPソルベント2835〔以上、出光興産(株)製、商品名〕、アイソゾールシリーズ〔新日本石油(株)製、商品名〕、シェルゾールTG、シェルゾールTK及びシェルゾールTM(以上、昭和シェル石油(株)製、商品名)、アイソパーE及びアイソパーG〔エクソンモービル(株)製、商品名〕などが挙げられる。
前記イソパラフィン系炭化水素溶剤はインキ組成中40〜95質量%の範囲で用いられる。
The oil-based ink composition of the present invention has an isoparaffin-based hydrocarbon solvent as a main solvent, and a silicone compound having a specific structure is added to a writing surface that tends to cause handwriting and a wet surface that tends to cause ink bleeding. Can form good handwriting.
The isoparaffin is preferably used because of its high safety and low odor.
The isoparaffin has a carbon number in the range of 5 to 12 and preferably in the range of 6 to 10. For example, isohexane, isoheptane, isooctane, isononane, isodecane and the like are used.
Commercially available isoparaffinic hydrocarbons include, for example, IP Solvent 1016, IP Solvent 1620, IP Solvent 2028 and IP Solvent 2835 (above, Idemitsu Kosan Co., Ltd., trade name), Isosol Series [Shin Nihon Petroleum Co., Ltd., trade name], Shellsol TG, Shellsol TK and Shellsol TM (above, Showa Shell Sekiyu KK, trade name), Isopar E and Isopar G [ExxonMobil Co., Ltd., Commodity Name].
The isoparaffinic hydrocarbon solvent is used in the range of 40 to 95% by mass in the ink composition.

本発明のインキ組成物は前記イソパラフィン系炭化水素溶剤を主溶剤とするが、補助的に例えば、n−ペンタン、n−ヘキサン、n−ヘプタン、n−オクタン、n−デカン、イソヘキサン、イソヘプタン、イソオクタン、イソノナン、イソデカン、メチルシクロヘキサン、エチルシクロヘキサン、デカリン、トルエン、キシレン、エチルベンゼン等の有機溶剤を少量配合しても良い。   The ink composition of the present invention uses the isoparaffinic hydrocarbon solvent as a main solvent, but supplementarily, for example, n-pentane, n-hexane, n-heptane, n-octane, n-decane, isohexane, isoheptane, isooctane. A small amount of an organic solvent such as isononane, isodecane, methylcyclohexane, ethylcyclohexane, decalin, toluene, xylene, or ethylbenzene may be blended.

前記シリコーン化合物としては、ジメチルシリコーンに有機基を導入した変性シリコーンのうちで、アミノ変性シリコーン、カルボキシル変性シリコーン、メルカプト変性シリコーン及びハイドロジェン変性シリコーンが適用される。
前記アミノ変性シリコーンは、有機基としてアミノ基をポリシロキサンの側鎖に導入したものであり、市販品としては、KF−868、KF−865、KF−864、KF−859、KF−393、KF−860、KF−880、KF−8004、KF−8002、KF−8005、KF−867、X-22-3820WKF−869、KF−861、X−
22−3939A、KF−877、KF−8008、KF−8010、KF−8012、KF−8015〔以上、商品名;信越化学工業(株)製〕或いはSF3452C、SS−3551〔以上、商品名;東レ・ダウコーニング(株)製〕等を挙げることができる。
また、前記カルボキシル変性シリコーンは、有機基としてカルボキシル基をポリシロキサンの側鎖に導入したものであり、市販品としては、X−22−3701E、X−22−162C、X−22−3710〔以上、商品名;信越化学工業(株)製〕が挙げられる。
Examples of the silicone compound include amino-modified silicone, carboxyl-modified silicone, mercapto-modified silicone, and hydrogen-modified silicone among the modified silicones in which an organic group is introduced into dimethyl silicone.
The amino-modified silicone is obtained by introducing an amino group as an organic group into the side chain of polysiloxane, and commercially available products include KF-868, KF-865, KF-864, KF-859, KF-393, KF. -860, KF-880, KF-8004, KF-8002, KF-8005, KF-867, X-22-3820WKF-869, KF-861, X-
22-3939A, KF-877, KF-8008, KF-8010, KF-8012, KF-8015 [above, trade name: manufactured by Shin-Etsu Chemical Co., Ltd.] or SF3452C, SS-3551 [above, trade name: Toray -Dow Corning Co., Ltd.].
In addition, the carboxyl-modified silicone is obtained by introducing a carboxyl group as an organic group into the side chain of the polysiloxane, and as commercially available products, X-22-3701E, X-22-162C, X-22-3710 [more , Trade name; manufactured by Shin-Etsu Chemical Co., Ltd.).

前記メルカプト変性シリコーンは、有機基としてメルカプト基をポリシロキサンの側鎖に導入したものであり、市販品としては、KF−2001、KF−2004、X−22−160AS、KF−6001、KF−6002、KF−6003〔以上、商品名;信越化学工業(株)製〕等が、更に前記ハイドロジェン変性シリコーンはジメチルポリシロキサンの側鎖のメチル基を水素に置換したもので市販品としては、KF−99、KF−9901〔以上、商品名;信越化学工業(株)製〕、及びH1107C〔商品名;東レ・ダウコーニング(株)製〕が挙げられる。
前記シリコーン化合物は、インキ組成物全量中0.1〜5質量%、好ましくは0.5〜5質量%の範囲で添加される。
0.1質量%未満では所望の種々の材質の筆記面に良好な筆跡を形成する効果を発現し難く、また、5質量%を超えて添加しても所望の効果の向上は見られないため、これ以上の添加は必要としない。
The mercapto-modified silicone is obtained by introducing a mercapto group as an organic group into the side chain of polysiloxane, and commercially available products include KF-2001, KF-2004, X-22-160AS, KF-6001, KF-6002. KF-6003 (trade name; manufactured by Shin-Etsu Chemical Co., Ltd.) and the like, and the hydrogen-modified silicone is obtained by replacing the methyl group of the side chain of dimethylpolysiloxane with hydrogen. -99, KF-9901 [above, trade name: manufactured by Shin-Etsu Chemical Co., Ltd.], and H1107C [trade name: manufactured by Toray Dow Corning Co., Ltd.].
The silicone compound is added in an amount of 0.1 to 5% by mass, preferably 0.5 to 5% by mass, based on the total amount of the ink composition.
If it is less than 0.1% by mass, it is difficult to exhibit the effect of forming good handwriting on the writing surface of various desired materials, and even if added over 5% by mass, the desired effect is not improved. No further addition is required.

前記着色剤としては、染料又は顔料が用いられる。
前記染料は、例えば、カラーインデックスにおいてソルベント染料として分類される有機溶剤可溶性染料が挙げられる。
前記ソルベント染料の具体例としては、バリファーストブラック3806(C.I.ソルベントブラック29)、バリファーストブラック3807(C.I.ソルベントブラック29のトリメチルベンジルアンモニウム塩)、スピリットブラックSB(C.I.ソルベントブラック5)、スピロンブラックGMH(C.I.ソルベントブラック43)、ニグロシンベースEX(C.I.ソルベントブラック7)、スピロンピンクBH(C.I.ソルベントレッド82)、ネオザポンブルー808(C.I.ソルベントブルー70)、スピロンバイオレットCRH(C.I.ソルベントバイオレット8−1)、バリファーストレッド1308(C.I.ベーシックレッド1とC.I.アシッドイエロー23の造塩体)、
スピリットレッド102(C.I.ベーシックレッド1とC.I.アシッドイエロー42の造塩体)、バリファーストバイオレット1701(C.I.ベーシックバイオレット1とC.I.アシッドイエロー42の造塩体)、バリファーストバイオレット1702(C.I.ベーシックバイオレット3とC.I.アシッドイエロー36の造塩体)、スピロンレッドCGH(C.I.ベーシックレッド1とドデシル(スルホフェノキシ)−ベンゼンスルホン酸の造塩体)、オイルブルー613(C.I.ソルベントブルー5と樹脂の混合物)等が挙げられる。
As the colorant, a dye or a pigment is used.
Examples of the dye include organic solvent-soluble dyes classified as solvent dyes in the color index.
Specific examples of the solvent dye include Bali First Black 3806 (CI Solvent Black 29), Bali First Black 3807 (trimethylbenzylammonium salt of CI Solvent Black 29), Spirit Black SB (C.I. Solvent Black 5), Spiron Black GMH (CI Solvent Black 43), Nigrosine Base EX (CI Solvent Black 7), Spiron Pink BH (CI Solvent Red 82), Neozapon Blue 808 ( CI Solvent Blue 70), Spiron Violet CRH (CI Solvent Violet 8-1), Bali First Red 1308 (Salt Form of CI Basic Red 1 and CI Acid Yellow 23) ,
Spirit Red 102 (Salt Form of CI Basic Red 1 and CI Acid Yellow 42), Bali First Violet 1701 (Salt Form of CI Basic Violet 1 and CI Acid Yellow 42) , Bali First Violet 1702 (Salt Form of CI Basic Violet 3 and CI Acid Yellow 36), Spiron Red CGH (Salt Form of CI Basic Red 1 and Dodecyl (sulfophenoxy) -benzenesulfonic acid) Body), oil blue 613 (a mixture of CI Solvent Blue 5 and resin), and the like.

顔料としては、カーボンブラック、群青、二酸化チタン顔料等の無機顔料、アゾ系顔料、フタロシアニン系顔料、インジゴ顔料、チオインジゴ顔料、スレン顔料、キナクリドン系顔料、アントラキノン系顔料、スロン系顔料、ジケトピロロピロール系顔料、ジオキサジン系顔料、ペリレン系顔料、ペリノン系顔料、イソインドリノン系顔料等の有機顔料、アルミニウム粉やアルミニウム粉表面を着色樹脂で処理した金属顔料、透明又は着色透明フィルムに金属蒸着膜を形成した金属光沢顔料、蛍光顔料、蓄光性顔料、芯物質として天然雲母、合成雲母、ガラス片、アルミナ、透明性フィルム片の表面を酸化チタン等の金属酸化物で被覆したパール顔料等が挙げられる。
前記着色剤は一種又は二種以上を混合して用いてもよく、インキ組成中3〜40質量%の範囲で用いられる。
Examples of pigments include inorganic pigments such as carbon black, ultramarine, and titanium dioxide pigments, azo pigments, phthalocyanine pigments, indigo pigments, thioindigo pigments, selenium pigments, quinacridone pigments, anthraquinone pigments, stron pigments, and diketopyrrolopyrrole. -Based pigments, dioxazine-based pigments, perylene-based pigments, perinone-based pigments, isoindolinone-based pigments, and other organic pigments, aluminum pigments, metal pigments whose surfaces are treated with colored resins, and transparent or colored transparent films with metal-deposited films Examples include metallic luster pigments, fluorescent pigments, luminous pigments, and natural mica, synthetic mica, glass pieces, alumina, and pearl pigments in which the surface of transparent film pieces is coated with a metal oxide such as titanium oxide. .
The colorant may be used singly or in combination of two or more, and is used in the range of 3 to 40% by mass in the ink composition.

また、筆跡の滲み抑制、定着性向上、堅牢性付与等の目的で樹脂が添加される。
前記樹脂としては、ケトン樹脂、ケトン−ホルムアルデヒド樹脂、アミド樹脂、アルキッド樹脂、ロジンエステル樹脂、ロジン変性フェノール樹脂、フェノール樹脂、アルキルフェノール樹脂、キシレン樹脂、脂環族炭化水素樹脂、ポリビニルピロリドン、テルペン樹脂、テルペンフェノール樹脂、ポリビニルブチラール樹脂、アクリル樹脂等を例示できる。
前記樹脂のうち好ましくは、テルペン樹脂、テルペンフェノール樹脂、アルキルフェノール樹脂、ロジンエステル樹脂が好適に用いられる。
前記樹脂は、インキ組成物全量中5〜30質量%、好ましくは、10〜30質量%添加される。
5質量%未満では筆跡の固着性が十分に得られ難く、また、30質量%を超えるとインキ粘度が上昇して筆跡のかすれを生じ易くなる。
In addition, a resin is added for the purpose of suppressing handwriting bleeding, improving fixability, and imparting fastness.
Examples of the resin include ketone resin, ketone-formaldehyde resin, amide resin, alkyd resin, rosin ester resin, rosin-modified phenol resin, phenol resin, alkylphenol resin, xylene resin, alicyclic hydrocarbon resin, polyvinyl pyrrolidone, terpene resin, Examples include terpene phenol resin, polyvinyl butyral resin, and acrylic resin.
Among the resins, terpene resins, terpene phenol resins, alkylphenol resins, and rosin ester resins are preferably used.
The resin is added in an amount of 5 to 30% by mass, preferably 10 to 30% by mass, based on the total amount of the ink composition.
If the amount is less than 5% by mass, it is difficult to obtain a sufficient fixability of the handwriting. If the amount exceeds 30% by mass, the ink viscosity increases and the handwriting is likely to be blurred.

前記インキ組成物は、チップ(ペン先)を筆記先端部に装着したマーキングペンやボールペンに充填して実用に供される。
マーキングペンに充填する場合、マーキングペン自体の構造、形状は特に限定されるものではなく、例えば、繊維チップ、フェルトチップ、プラスチックチップを筆記先端部に装着し、軸筒内部に収容した繊維束からなるインキ吸蔵体にインキを含浸させ、筆記先端部にインキを供給する構造、軸筒内部に直接インキを収容し、櫛溝状のインキ流量調節部材や繊維束からなるインキ流量調節部材を介在させる構造のマーキングペンが挙げられる。
ボールペンに充填する場合、ボールペン自体の構造、形状は特に限定されるものではなく、例えば、軸筒内部に収容した繊維束からなるインキ吸蔵体にインキを含浸させ、筆記先端部にインキを供給する構造、軸筒内部に直接インキを収容し、櫛溝状のインキ流量調節部材や繊維束からなるインキ流量調節部材を介在させる構造、軸筒内にインキ組成物を充填したインキ収容管を有し、該インキ収容管はボールを先端部に装着したチップに連通しており、さらにインキの端面には逆流防止用の液栓が密接している構造のボールペンが挙げられる。
The ink composition is put into practical use by filling a marking pen or ballpoint pen with a tip (pen tip) attached to the writing tip.
When filling the marking pen, the structure and shape of the marking pen itself are not particularly limited. For example, a fiber tip, felt tip, or plastic tip is attached to the writing tip and the fiber bundle accommodated inside the shaft tube is used. The ink occlusion body is impregnated with ink, the ink is supplied to the tip of the writing, the ink is directly stored inside the shaft cylinder, and the ink flow rate adjustment member consisting of a comb groove-like ink flow rate adjustment member or fiber bundle is interposed The marking pen of structure is mentioned.
When filling the ball-point pen, the structure and shape of the ball-point pen itself are not particularly limited. For example, an ink occlusion body composed of a fiber bundle housed in the shaft tube is impregnated with ink and supplied to the writing tip. Structure, ink is stored directly inside the shaft cylinder, and there is an ink storage tube filled with the ink composition in the shaft cylinder, with a comb groove-shaped ink flow control member and an ink flow control member consisting of fiber bundles interposed The ink storage tube communicates with a chip having a ball attached to the tip, and a ballpoint pen having a structure in which a liquid stopper for backflow prevention is in intimate contact with the end surface of the ink.

実施例及び比較例のインキ組成を以下の表に示す。尚、表中の組成の数値は質量部を示す。   The ink compositions of Examples and Comparative Examples are shown in the following table. In addition, the numerical value of the composition in a table | surface shows a mass part.

Figure 0005618563
Figure 0005618563

表中の原料の内容を注番号に沿って説明する。
(1)オリエント化学工業(株)製、商品名:オイルピンク312
(2)カーボンブラック20%、分散剤10%、イソオクタン70%の顔料分散液
(3)中央合成化学(株)製、商品名:オイルブルーBA
(4)中央合成化学(株)製、商品名:オイルレッド6B
(5)中央合成化学(株)製、商品名:オイルイエロー6B
(6)荒川化学工業(株)製、商品名:タマノール510(アルキル基の炭素数が7のアルキルフェノールを主成分とする)
(7)ヤスハラケミカル(株)製、商品名:YSポリスターT115
(8)荒川化学工業(株)製、商品名:パインクリスタルKE−100
(9)信越化学工業(株)製、商品名:KF−8015
(10)信越化学工業(株)製、商品名:X−22−3701E
(11)信越化学工業(株)製、商品名:KF−2004
(12)信越化学工業(株)製、商品名:KF−9901
(13)荒川化学工業(株)製、商品名:ケトンレジンK−90
(14)出光興産(株)製、商品名:IPソルベント1620
The contents of the raw materials in the table are explained according to the note numbers.
(1) Made by Orient Chemical Industry Co., Ltd., trade name: Oil Pink 312
(2) Pigment dispersion of carbon black 20%, dispersant 10%, isooctane 70% (3) Chuo Synthetic Chemical Co., Ltd., trade name: Oil Blue BA
(4) Chuo Synthetic Chemical Co., Ltd., trade name: Oil Red 6B
(5) Chuo Synthetic Chemical Co., Ltd., trade name: Oil Yellow 6B
(6) Arakawa Chemical Industries, Ltd., trade name: Tamanol 510 (mainly alkylphenol having an alkyl group with 7 carbon atoms)
(7) Yasuhara Chemical Co., Ltd., trade name: YS Polystar T115
(8) Arakawa Chemical Industries, Ltd., trade name: Pine Crystal KE-100
(9) Product name: KF-8015, manufactured by Shin-Etsu Chemical Co., Ltd.
(10) Product name: X-22-3701E, manufactured by Shin-Etsu Chemical Co., Ltd.
(11) Product name: KF-2004, manufactured by Shin-Etsu Chemical Co., Ltd.
(12) Product name: KF-9901, manufactured by Shin-Etsu Chemical Co., Ltd.
(13) Arakawa Chemical Industries, Ltd., trade name: Ketone Resin K-90
(14) Idemitsu Kosan Co., Ltd., trade name: IP Solvent 1620

インキの調製
前記実施例及び比較例の配合量で各原料を混合し、20℃で3時間撹拌溶解することにより油性インキ組成物を得た。
Preparation of ink Each raw material was mixed by the compounding quantity of the said Example and a comparative example, and the oil-based ink composition was obtained by stirring and dissolving at 20 degreeC for 3 hours.

マーキングペンの作製
得られた各インキ組成物を軸筒内のインキ吸蔵体に充填し、先端部にインキ吸蔵体と連通するアクリル繊維束を樹脂で結着したチップを設けることで試料用マーキングペンを得た。
Preparation of marking pen Marking pen for sample by filling each ink composition obtained into the ink occlusion body in the shaft cylinder and providing a tip with a resin bound acrylic fiber bundle communicating with the ink occlusion body at the tip Got.

各マーキングペンを用いて以下のテストを行った。
筆記試験(乾燥状態)
クラフトテープ[ニチバン(株)製、品番:KF−37]、ポリエチレンフィルム、アルミニウム板の表面に筆記し、筆跡のはじき具合を目視により観察した。
水濡れ面筆記試験
水で濡らしたアルミニウム板の表面に筆記し、筆跡と水滴の状態を目視により観察した。その際の筆跡の状態を図1に示す。
The following tests were performed using each marking pen.
Written test (dry state)
Kraft tape [manufactured by Nichiban Co., Ltd., product number: KF-37] was written on the surface of a polyethylene film and an aluminum plate, and the repellency of the handwriting was visually observed.
Water-wetted surface writing test Written on the surface of an aluminum plate wetted with water, the state of handwriting and water droplets was observed visually. The state of the handwriting at that time is shown in FIG.

以下の表に筆記試験の結果を示す。

Figure 0005618563
The following table shows the results of the written test.
Figure 0005618563

尚、表中の評価の記号は以下の通りである。
筆記試験
○:筆跡のはじきは見られない。
△:筆跡にはじきがみられる。
×:筆跡に著しいはじきが見られる。
水濡れ面筆記試験(図1参照)
○:水滴に着色剤が移行することなく、明瞭な筆跡が形成される。
△:水滴に着色剤が移行するものの、筆跡は形成される。
×:筆跡を形成できない。
The evaluation symbols in the table are as follows.
Written test ○: Handwriting repelling is not seen.
Δ: The handwriting is repelled.
X: Remarkable repellency is seen in the handwriting.
Wetted surface writing test (see Figure 1)
○: A clear handwriting is formed without the colorant moving to the water droplets.
Δ: Colorant migrates to water droplets, but handwriting is formed.
X: A handwriting cannot be formed.

Claims (2)

着色剤と、樹脂と、イソパラフィン系炭化水素溶剤と、メルカプト変性シリコーン及びハイドロジェン変性シリコーンから選ばれる一種又は二種以上のシリコーン化合物を含有してなる筆記具用油性インキ組成物。 A colorant, a resin and a isoparaffinic hydrocarbon solvents, main mercapto-modified silicones and one or a writing instrument for oil-based ink composition comprising the two or more silicone compounds selected from the hydrogen-modified silicone. 前記シリコーン化合物をインキ組成物全量中0.1〜5質量%含有してなる請求項1記載の筆記具用油性インキ組成物。
The oil-based ink composition for a writing instrument according to claim 1, comprising 0.1 to 5% by mass of the silicone compound in the total amount of the ink composition.
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